There is absolutely no reason for me to be unhappy and generally I'm not, I just don't feel anything except for some anxiety. I have an amazing job, an extremely supportive family, a nice apartment, several close friends. Yet, there are some mornings I struggle to get out of bed. There's no external source in my life currently (or past really) that is causing this. I have been diagnosed with ADHD, Depression, and Anxiety, several of my other family members (brothers, mother, grandmother, etc.) have some or all those things too. It's a very real, biological, sometimes genetic thing. It's a very complicated beast. There's no just recognizing it and overcoming it. Yes, I recognize a lot of my symptoms are caused by my brain, but that doesn't do a lot for me to be able to just overcome it when I can't even find the motivation to brush my teeth. It takes help, and a long time retraining your mind to not just immediately assume you're a worthless piece of shit not worthy of anything.
It's beatable, but when you're in the state of mind of a depressed person, you're not going to see that immediately.
/rant